Depositing metal particles on carbon nanotubes
AssigneeHer Majesty the Queen in right of Canada, as represented by the Minister of National Defense of Her Majesty's Canadian Government
InventorsJean Pol Dodelet, Xuellang Sun, Ruying Li, Dominique Villers, Sylvain Desilets
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Abstract
Metal catalyst particles are deposited on carbon nanotubes by preparing a silane solution of a metal catalyst salt, e.g. platinum or ruthenium chloride, immersing an electrically conducting substrate carrying nanotubes in the silane solution to yield a composite structure of substrate, nanotubes and catalyst, and reducing the composite structure to yield a composite of substrate, carbon nanotubes and metallic catalyst particles.
Claims17
A process for producing carbon nanotubes with metal catalyst particles thereon comprising the steps of;
- a) preparing a silane solution of 2(4-chlorosulfonylphenyl) ethyl trichlorosilane and a metal catalyst, wherein the metal catalyst is at least one of platinum and ruthenium;
- b) immersing an electrically conducting substrate carrying carbon nanotubes in the silane solution, the silane solution containing at least one of a platinum and a ruthenium salt to yield a composite structure of substrate, carbon nanotube and metal catalyst;
- and
- c) reducing the composite structure to yield a composite of substrate, carbon nanotube and metal catalyst particles.
A process for producing carbon nanotubes with platinum particles thereon comprising the steps of:
- a) preparing a silane solution of 2(4-chlorosulfonylphenyl) ethyl trichlorosilane and platinum chloride;
- b) immersing a carbon fiber substrate carrying multiwalled carbon nanotubes in the silane solution to yield a composite structure of carbon fiber substrate, carbon nanotubes and platinum particles;
- and
- c) reducing the composite structure to yield a composite of carbon fiber substrate, multiwalled carbon nanotubes and platinum particles on the nanotubes.
A process for producing carbon nanotubes with platinum/ruthenium alloy particles thereon comprising the steps of:
- a) preparing a silane solution of 2-(4-chlorosulfonylphenyl) ethyl trichlorosilane, platinum chloride and ruthenium chloride;
- b) immersing a carbon fiber substrate carrying multiwalled carbon nanotubes in the silane solution to yield a composite structure of carbon fiber substrate, carbon nanotubes and platinum/ruthenium alloy particles;
- and
- c) reducing the composite structure to yield a composite of carbon fiber substrate, multiwalled carbon nanotubes and platinum/ruthenium alloy particles on the nanotubes.
Dependencies are inferred from the claim text.